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As for a kind of low-calcium and low-magnesium stone coal featuring low alkalinity and high content of silica, a process of sulfuric acid curing followed by water leaching was adopted in an experiment, and the effects of grain size, sulfuric acid dosing, curing temperature and curing time on vanadium leaching were investigated. The results show that the leaching rate of vanadium reaches 88.6% when the raw ore with grain size of -0.15 mm was cured at 120 ℃ for 8.5 h by adding sulfuric acid at 20%, and then water leaching at the room temperature for 2 h with liquid and solid at a ratio of 2∶1. During the curing process, the mica structure with the locked vanadium therein is effectively dissociated and soluble vanadium is released. It is shown that the leaching solution has a lower content of silicon (0.08 g/L), significantly reduced compared to the process of direct acid leaching or the process of roasting plus acid leaching, which is beneficial to the subsequent extraction process.

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针对低钙镁钒矿碱度低、二氧化硅含量高的特点,采用硫酸熟化-水浸出工艺处理石煤钒矿,考察了矿物粒级、硫酸用量、熟化温度、熟化时间等参数对钒浸出的影响。结果表明,在矿石粒度-0.15 mm、硫酸用量20%、熟化温度120 ℃、熟化时间8.5 h的优化条件下,所得熟料在液固比2∶1、室温下用水搅拌浸出2 h,钒浸出率达到了88.6%。熟化过程矿物中包裹钒的云母结构得到高效解离,并释放可溶性钒,浸出液中硅含量低(0.08 g/L),比直接酸浸或焙烧酸浸工艺中硅含量大幅降低,对后续萃取工序非常有利。

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万洪强(1984—),男,江西南昌人,硕士,高级工程师,研究方向为有色金属冶金清洁工艺开发及设计。

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万洪强(1984—),男,江西南昌人,硕士,高级工程师,研究方向为有色金属冶金清洁工艺开发及设计。

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万洪强(1984—),男,江西南昌人,硕士,高级工程师,研究方向为有色金属冶金清洁工艺开发及设计。

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低钙镁石煤钒矿熟化浸出工艺研究
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万洪强 , 李静 , 张丽芬 , 罗豪 , 田子瑜
矿冶工程杂志 | 冶金 2023,43(5): 89-91
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矿冶工程杂志 | 冶金 2023, 43(5): 89-91
低钙镁石煤钒矿熟化浸出工艺研究
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万洪强, 李静, 张丽芬, 罗豪, 田子瑜
作者信息
  • 长沙矿冶研究院有限责任公司,湖南 长沙 410012
  • 万洪强(1984—),男,江西南昌人,硕士,高级工程师,研究方向为有色金属冶金清洁工艺开发及设计。

Curing and Leaching Technique for Vanadium Extraction from Low Calcium and Low Magnesium Stone Coal
Hongqiang WAN, Jing LI, Lifeng ZHANG, Hao LUO, Ziyu TIAN
Affiliations
  • Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China
出版时间: 2023-10-01 doi: 10.3969/j.issn.0253-6099.2023.05.021
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针对低钙镁钒矿碱度低、二氧化硅含量高的特点,采用硫酸熟化-水浸出工艺处理石煤钒矿,考察了矿物粒级、硫酸用量、熟化温度、熟化时间等参数对钒浸出的影响。结果表明,在矿石粒度-0.15 mm、硫酸用量20%、熟化温度120 ℃、熟化时间8.5 h的优化条件下,所得熟料在液固比2∶1、室温下用水搅拌浸出2 h,钒浸出率达到了88.6%。熟化过程矿物中包裹钒的云母结构得到高效解离,并释放可溶性钒,浸出液中硅含量低(0.08 g/L),比直接酸浸或焙烧酸浸工艺中硅含量大幅降低,对后续萃取工序非常有利。

低钙镁石煤  /  钒矿  /  硫酸熟化  /  浸出  /  水浸

As for a kind of low-calcium and low-magnesium stone coal featuring low alkalinity and high content of silica, a process of sulfuric acid curing followed by water leaching was adopted in an experiment, and the effects of grain size, sulfuric acid dosing, curing temperature and curing time on vanadium leaching were investigated. The results show that the leaching rate of vanadium reaches 88.6% when the raw ore with grain size of -0.15 mm was cured at 120 ℃ for 8.5 h by adding sulfuric acid at 20%, and then water leaching at the room temperature for 2 h with liquid and solid at a ratio of 2∶1. During the curing process, the mica structure with the locked vanadium therein is effectively dissociated and soluble vanadium is released. It is shown that the leaching solution has a lower content of silicon (0.08 g/L), significantly reduced compared to the process of direct acid leaching or the process of roasting plus acid leaching, which is beneficial to the subsequent extraction process.

low-calcium and low-magnesium stone coal  /  vanadium ore  /  sulfuric acid curing  /  leaching  /  water leaching
万洪强, 李静, 张丽芬, 罗豪, 田子瑜. 低钙镁石煤钒矿熟化浸出工艺研究. 矿冶工程杂志, 2023 , 43 (5) : 89 -91 . DOI: 10.3969/j.issn.0253-6099.2023.05.021
Hongqiang WAN, Jing LI, Lifeng ZHANG, Hao LUO, Ziyu TIAN. Curing and Leaching Technique for Vanadium Extraction from Low Calcium and Low Magnesium Stone Coal[J]. Mining and Metallurgical Engineering, 2023 , 43 (5) : 89 -91 . DOI: 10.3969/j.issn.0253-6099.2023.05.021
  • 国家重点研发计划(2020YFC1909700)
2023年第43卷第5期
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doi: 10.3969/j.issn.0253-6099.2023.05.021
  • 接收时间:2023-04-02
  • 首发时间:2026-03-05
  • 出版时间:2023-10-01
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  • 收稿日期:2023-04-02
基金
国家重点研发计划(2020YFC1909700)
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    长沙矿冶研究院有限责任公司,湖南 长沙 410012
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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